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Ralf Theiß
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Proceedings Papers

Determination of Material Parameters and FEM Simulation for the Development of a Design System for Shape Memory Springs

Alexander Hiekel, Fabian Hoffmann, Romina Krieg, Ralf Theiß, Kenny Pagel, Christian Pelshenke, Simon Horn, Mehrdad Mehrbakhsh, Welf-Guntram Drossel, Peter Dültgen
Proc. ASME. SMASIS2023, ASME 2023 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T03A008, September 11–13, 2023
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2023-111107
https://doi.org/10.1115/SMASIS2023-111107
View Paper titled, Determination of Material Parameters and FEM Simulation for the Development of a Design System for Shape Memory Springs
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Topics: Design, Finite element methods, Finite element model, Shape memory alloys, Shapes, Simulation, Springs
Proceedings Papers

Examination of the Interdependency of Applied Load, Realizable Stroke and Transition Temperatures in Cyclic Tests Concerning Lifetime of Single Crystalline CuAlNi

Moritz Langhoff, Simon Horn, Romina Krieg, Christian Krancher, Fabian Hoffmann, Ralf Theiß, Peter Dültgen
Proc. ASME. SMASIS2022, ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T01A009, September 12–14, 2022
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2022-90963
https://doi.org/10.1115/SMASIS2022-90963
View Paper titled, Examination of the Interdependency of Applied Load, Realizable Stroke and Transition Temperatures in Cyclic Tests Concerning Lifetime of Single Crystalline CuAlNi
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Topics: Phase transition temperature, Shape memory alloys, Stress, Temperature, Cycles, Nickel titanium alloys, Actuators, Cooling, Copper, Crystals
Proceedings Papers

Investigation of Transformation Temperatures, Microstructure, and Deformation Behavior of a Pseudoelastic Cu-Based Shape Memory Alloy

Christian Krancher, Benjamin Schelnberger, Fabian Hoffmann, Romina Krieg, Ralf Theiß, Peter Dültgen
Proc. ASME. SMASIS2022, ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T01A008, September 12–14, 2022
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2022-90933
https://doi.org/10.1115/SMASIS2022-90933
View Paper titled, Investigation of Transformation Temperatures, Microstructure, and Deformation Behavior of a Pseudoelastic Cu-Based Shape Memory Alloy
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Topics: Deformation, Shape memory alloys, Temperature
Proceedings Papers

Investigation of Transformation Behaviour of Pseudoelastic NiTi Shape Memory Alloys Under Compressive Loading to Assess the Potential Use in Vibration Damping in Milling Operations

Christian Brecher, Stephan Neus, Niclas Klumpen, Peter Dültgen, Ralf Theiß, Romina Krieg, Fabian Hoffmann
Proc. ASME. SMASIS2021, ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T05A003, September 14–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2021-67467
https://doi.org/10.1115/SMASIS2021-67467
View Paper titled, Investigation of Transformation Behaviour of Pseudoelastic NiTi Shape Memory Alloys Under Compressive Loading to Assess the Potential Use in Vibration Damping in Milling Operations
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Topics: Damping, Milling, Nickel titanium alloys, Stress, Vibration
Proceedings Papers

Influences of Various Parameters on the Microstructure and Their Effects on the Structural Fatigue of Shape Memory Systems

Peter Dültgen, Ralf Theiß, Romina Krieg, Fabian Hoffmann, Yannic Zwinscher
Proc. ASME. SMASIS2021, ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T06A005, September 14–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2021-68015
https://doi.org/10.1115/SMASIS2021-68015
View Paper titled, Influences of Various Parameters on the Microstructure and Their Effects on the Structural Fatigue of Shape Memory Systems
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Topics: Fatigue, Shapes, Actuators, Damage, Stress, Durability, Nickel titanium alloys, Biocompatibility, Biomedicine, Cooling
Proceedings Papers

Additively Manufactured Force Sensors Based on Shape Memory Alloys

Alina Heynen, Robin Roj, Fabian Hoffmann, Romina Krieg, Ralf Theiß, Peter Dültgen
Proc. ASME. SMASIS2021, ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T05A011, September 14–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2021-68013
https://doi.org/10.1115/SMASIS2021-68013
View Paper titled, Additively Manufactured Force Sensors Based on Shape Memory Alloys
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Topics: Additive manufacturing, Finite element methods, Finite element model, Force sensors, Optimization, Sensors, Shape memory alloys, Topology
Proceedings Papers

Development of Shape Memory-Based Elastic-Adaptive Damping Elements for Sport and Rehabilitation Equipment

Fabian Hoffmann, Robin Roj, Ralf Theiß, Peter Dültgen
Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A012, September 15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2020-2255
https://doi.org/10.1115/SMASIS2020-2255
View Paper titled, Development of Shape Memory-Based Elastic-Adaptive Damping Elements for Sport and Rehabilitation Equipment
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Topics: Damping, Shape memory alloys, Shapes, Sports, Stress, Temperature, Alloys, Brakes, Deformation, Displacement
Proceedings Papers

Process Optimization of Local Annealing of SMA Wires for Plagiarism Detection

Moritz Langhoff, Robin Roj, Ralf Theiß, Peter Dültgen
Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A014, September 15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2020-2257
https://doi.org/10.1115/SMASIS2020-2257
View Paper titled, Process Optimization of Local Annealing of SMA Wires for Plagiarism Detection
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Topics: Annealing, Optimization, Wire
Proceedings Papers

Data Analytics Supported Quality Control of Serial-Produced SMA-Actuators for Space Applications

Robin Roj, Ralf Theiß, Peter Dültgen, Florian Schummer, Jakob Bachler, Roland Konlechner, Sebastian Würl
Proc. ASME. SMASIS2020, ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, V001T04A015, September 15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2020-2260
https://doi.org/10.1115/SMASIS2020-2260
View Paper titled, Data Analytics Supported Quality Control of Serial-Produced SMA-Actuators for Space Applications
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Topics: Actuators, Fatigue, Quality control, Shape memory alloys
Proceedings Papers

Damping Properties of Steel, Copper and NiTi for Use in Industrial Circular Saws

Ralf Theiß, Benjamin Dymel, Sven Langbein, Tobias Nürnberg
Proc. ASME. SMASIS2015, Volume 2: Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting, V002T04A015, September 21–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2015-9012
https://doi.org/10.1115/SMASIS2015-9012
View Paper titled, Damping Properties of Steel, Copper and NiTi for Use in Industrial Circular Saws
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Topics: Circular saws, Copper, Damping, Nickel titanium alloys, Steel, Vibration, Cutting, Cutting tools, Stress, Alloys
Proceedings Papers

The Experimental Validation of Pseudoelastic Shape Memory Sheet Elements in Tooling Applications

Ralf Theiß, Tobias Nürnberg, Alexander Czechowicz
Proc. ASME. SMASIS2014, Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring; Keynote Presentation, V001T01A031, September 8–10, 2014
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2014-7701
https://doi.org/10.1115/SMASIS2014-7701
View Paper titled, The Experimental Validation of Pseudoelastic Shape Memory Sheet Elements in Tooling Applications
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Topics: Shapes, Tooling, Damping, Springs, Deformation, Machine tools, Stress, Alloys, Computer programming, Cycles
Proceedings Papers

Application of Shape Memory Alloys in Locking Devices

Ralf Theiß, Daniel Lichte, Kai-Dietrich Wolf
Proc. ASME. SMASIS2012, Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting, 425-432, September 19–21, 2012
Publisher: American Society of Mechanical Engineers
Paper No: SMASIS2012-8155
https://doi.org/10.1115/SMASIS2012-8155
View Paper titled, Application of Shape Memory Alloys in Locking Devices
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Topics: Shape memory alloys, Actuators, Electric motors, Shapes, Wire, Deformation, Engines, Motors, Reliability, Security
Proceedings Papers

Content-Based Support for Annotating New Content in a Wiki for Shape Memory Technology

Ralf Theiß, Sven Langbein, Tim Sadek
Proc. ASME. IDETC-CIE2011, Volume 2: 31st Computers and Information in Engineering Conference, Parts A and B, 1153-1162, August 28–31, 2011
Publisher: American Society of Mechanical Engineers
Paper No: DETC2011-48240
https://doi.org/10.1115/DETC2011-48240
View Paper titled, Content-Based Support for Annotating New Content in a Wiki for Shape Memory Technology
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Topics: Shapes, Engineering disciplines, Materials research, Text analytics